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Report No.

Permeability estimation based on crack tensor on site scale

Yamasaki, Masanao*; Tsusaka, Kimikazu*; Otani, Tatsuhiko*; Shinji, Masato*

Japan Atomic Energy Agency has been constructed the Underground Research Laboratory in Hokkaido. In the shaft excavation, length, direction and aperture of geological observation are measured and analyzed in order to estimate rock permeability around lining. In this report, correlation between frequency of cracks and rock permeability based on crack tensor and stereology was discussed. Prediction equation of rock permeability from the frequency of cracks on the shaft wall was also proposed.



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